Question about 1998 Toyota Camry

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When I start the car it sounds like a rod hitting the block. When I put it in gear the sound stops. When it goes to shift the knock sounds off again just as it shifts to a higher gear. It is as if the increase in torque on the engine makes the knock stop.

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  • rolbop Feb 06, 2010

    It sounds more like a hollow wood knock than a metallic bell ring.

  • rolbop Feb 06, 2010

    When I start the car it sounds like a rod hitting the block. When I put it in gear the sound stops. When it goes to shift the knock sounds off again just as it shifts to a higher gear. It is as if the increase in torque on the engine makes the knock stop. It sounds more like a hollow wood knock than a metallic bell ring.

  • rolbop Feb 06, 2010

    Thank you very much. I will check it out.

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First thing to do is check the torque converter bolts on the fly wheel theres a small inspection cover on the bottom of car in between the engine and transmission retorque all four then u will also need to check the starter gear on the starter to do this you will have to remove starter.

Posted on Feb 06, 2010

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Check your flywheel bolts. Most cars when having loose flywheel bolts get a sound like a bell ringing I never heard a car like yours with loose flywheel bolts yet so the sound can be different. Yes the sound changes as the rpm's change with this problem too

Posted on Feb 06, 2010

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Why has my truck suddenly gotten louder while moving and back to normal when I stop?


You might be able to place the truck's rear end on Jack stands. Then put in gear with the brake off. So the rear wheels can spin, while some walks around the truck to help isolate the sound. Once you have a closer area to listen to isolated. A trick to isolate more is to use some thing like a wooden rod and place it on ect. the engine on one end and the other end to your ear. Move it around til the sound is the loudest. If you have a stick shift you can use the gear shift to listen to the trans. while some else is driving as well.

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More information is needed to help with this.

1. Is the knocking coming from the engine, the transmission or elsewhere?

2. If you believe it is from the engine, start the motor and put the auto in neutral and gradually depress the accelerator pedal to gently increase the engine speed for 2 minutes. If you can replicate the knocking noise then obviously it is engine.

3. If the knocking is from the engine check the engine oil level which you should be doing frequently anyhow to ensure you top it up and do not run the oil level low and destroy the motor. (Failure to have the engine oil changed at the required intervals can also result in excessive wear and damage to engine components.) If you do this check and find the oil level is very low then advise here when you repost your query with more information about the source of the knocking sound.

4. Also indicate in your post what grade (octane rating) of fuel you are running the engine on.

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